Robin,

Been watching this with interest as I want to do the same to mine going forward, although not sure my engineering skills are up to the challenge yet.

I am still struggling to understand how the Z-mechanism will work. Does the 'honking plate' clamp to the quill flange under the head and, if so, where does the remainder bolt to on the head itself. What is the advantage of that over motorising the quill handle itself?

On the X-axis, I can understand why the motorised element sticks out so far to allow more X travel, but again, how is that better than driving the handwheel end? And could it be done without it sticking out so far as this would give me space problems?

I know Kip has done something similar.

I've yet to strip it down and draw it all up to work out how to do it, but just starting to do some planning for later on this year.